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php-manual-pt_BR-5.2.4-1mdv2008.1.noarch.rpm

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>ibase_set_event_handler</H1
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>    (PHP 5)</P
>ibase_set_event_handler&nbsp;--&nbsp;
      Registra uma função de callback para ser chamada quando eventos são postados
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>Descrição</H2
>resource <B
CLASS="methodname"
>ibase_set_event_handler</B
> ( callback event_handler, string event_name1 [, string event_name2 [, string ...]] )<BR
></BR
>resource <B
CLASS="methodname"
>ibase_set_event_handler</B
> ( resource connection, callback event_handler, string event_name1 [, string event_name2 [, string ...]] )<BR
></BR
><P
>&#13;     Esta função registra uma função do usuário como gerenciador de eventos para os
     eventos especificados. O callback é chamado com o nome do evento e a conexão como argumento
     quando qualquer um dos eventos especificados e postado pelo banco de dados. O callback
     deve retornar <TT
CLASS="constant"
><B
>FALSE</B
></TT
> se o gerenciador de eventos deve ser cancelado.
     Qualquer outro valor retornado é ignorado.
    </P
><P
>&#13;     <DIV
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><code><font color="#000000">
<font color="#0000BB">&lt;?php<br /></font><font color="#007700">function </font><font color="#0000BB">event_handler</font><font color="#007700">(</font><font color="#0000BB">$event_name</font><font color="#007700">, </font><font color="#0000BB">$link</font><font color="#007700">)<br />{<br />&nbsp;&nbsp;&nbsp;&nbsp;if (</font><font color="#0000BB">$event_name</font><font color="#007700">==</font><font color="#DD0000">"NEW ORDER"</font><font color="#007700">) {<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#FF8000">// process new order<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#0000BB">ibase_query</font><font color="#007700">(</font><font color="#0000BB">$link</font><font color="#007700">, </font><font color="#DD0000">"UPDATE orders SET status='handled'"</font><font color="#007700">);<br />&nbsp;&nbsp;&nbsp;&nbsp;} else if (</font><font color="#0000BB">$event_name</font><font color="#007700">==</font><font color="#DD0000">"DB_SHUTDOWN"</font><font color="#007700">) {<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#FF8000">// free event handler<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#007700">return </font><font color="#0000BB">false</font><font color="#007700">;<br />&nbsp;&nbsp;&nbsp;&nbsp;}<br />}<br /></font><font color="#0000BB">ibase_set_event_handler</font><font color="#007700">(</font><font color="#0000BB">$link</font><font color="#007700">,</font><font color="#DD0000">"event_handler"</font><font color="#007700">,</font><font color="#DD0000">"NEW_ORDER"</font><font color="#007700">,</font><font color="#DD0000">"DB_SHUTDOWN"</font><font color="#007700">);<br /></font><font color="#0000BB">?&gt;</font>
</font>
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>
    </P
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>&#13;     O valor de retorno é um recurso event. Este recurso pode ser utilizado
     para liberar o gerenciador de evento usando <A
HREF="function.ibase-free-event-handler.html"
><B
CLASS="function"
>ibase_free_event_handler()</B
></A
>.
    </P
><P
>&#13;     Veja também
     <A
HREF="function.ibase-free-event-handler.html"
><B
CLASS="function"
>ibase_free_event_handler()</B
></A
> e
     <A
HREF="function.ibase-wait-event.html"
><B
CLASS="function"
>ibase_wait_event()</B
></A
>.
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